| 出生地 |
Guangdong China (Mainland) |
| 牌子的名字 |
DH |
| 模式的数量 |
dh-pfa |
| 形状 |
戒指垫 |
| 标准或Nonstandard |
Nonstandard |
PFA washer/ PFA gasket Mechanical toughness : Superior antistick and low frictional properties High resistance to impact and tearing Useful physical properties at cryopenic temperatures